The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2008
Filed:
Jun. 26, 2006
Peter Ernest Page, East Perth WA, AU;
Alexander Jeffrey Burns, Willetton WA, AU;
John Edward Niski, Manning WA, AU;
Peter Ernest Page, East Perth WA, AU;
Alexander Jeffrey Burns, Willetton WA, AU;
John Edward Niski, Manning WA, AU;
Woodside Energy Ltd., Perth, WA, AU;
Abstract
Methods are provided in which reliance is placed on a first and second barrier respectively positioned in a wellto provide well control during well suspension, completion and/or workover operations. Each of the barriers is below the depth of the lowermost end of a completion string when that string is installed in the well. By not placing either barrier higher up in the well-bore, both of the barriers can remain in place during suspension and completion and workover operations, thus obviating the need to use a BOP stack to supplement well control. This results in a considerable saving in drill rig time and thus significantly reduces the cost of constructing a well.